Wrench



R. G. SPEIGHT.

WRENCH.

APPLICATION FILED SEPT. I3. 1921.

Patented Jan. 31, 1922.

INVENTOR.

A TTORNE Y.

'uul'rs o 'sra ituss ni. e. srnren'r, or iannii' WRENCH.

Specification of Letters Patent. Patented Jan. 31, 1922.

Application filed September 13, 1921. Serial No. 500,301.

To all whom it may concern:

Be it known that 1, Russian G. SPEIGHT, a citizen of the United States, residin at Greenfield, in the county of Dade and S tate of Missouri, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to wrenches of the class especially adapted to engage pipes or rods, and has for one of its objects to simplify the construction and increase the efliciency and utility of devices of this chara acter. V

Another object of the invention is to provide a device of this character in which the jaw elements automatically adjust themselves to the pipe or rod, and without the necessity of detaching or adjusting any of the parts.

With these and other objects in view the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention: v

Figure 1 is a side elevation of the improved implement, showing the jaws in intermediate position;

Figure 2 is a side view, partly in section, showing the jaws at the greatest open position.

Figure 3 is a view similarto Figure 2 with the jaws at the least distended position. Figure 4 is a plan view of a portion of the implement as shown in Figure 1.

The improved implement comprises a shank or stock 10 extended into a handle 11 The longitudinal portion 13 of the L- shaped jaw'is pivoted intermediate its ends 0 at 16 between the cheek portions 12.

The other jaw is represented as a whole at 17 andis provided with op-posingfpipe or rod engaging teeth 18, and pivoted at 19 intermediate the ends between the cheek portions 12. 7

The portion 20 of the other jaw 17 bears flatly against the-contiguous face of the longitudinal portion 13 of the L-shaped jaw when the jaws are fully open as shown in Figure 2, or when' fully closed as shown in Figure 3, to limit the movements when closed or open.

The ends of members are recessed to receive the terminals of a link 21, the latter being pivoted at 22 and 23 to the jaws.

. By this arrangement it will be obvious the jaws between the cheek that a simply constructed and efiicient pipe I and rod wrench is produced which isquickly 1 and automatically adjusted to pipes or rods of various sizes, and which can be cheaply constructed of caststeel and with very little 7 machining or fitting.

The preferred embodiment of the invention is disclosed in the drawing and 1 set forth in the specification, but it will be understood that modifications within the scope of the claimed invention may be madein the construction without departing from the principle of the invention or sacrificing any of its advantages. I v

Having thus described the invention what is claimed, as new is 1. A wrench comprising a stock, an L- shaped jaw member including a longitudinal portion and a lateral portion and pivoted intermediate the ends of the longitudinal portion to the stock, another jaw member pivoted intermediate its ends to the stock,

and a link member coupling the inner ends of the jaws.

2. A wrench comprising a stock having I I spaced cheek portions at one end, an L shaped jaw member including a longitudinal portion and a lateral portion pivoted intermediate the ends of the longitudinal portion between the cheek portions, another jaw member pivoted intermediate its ends between the cheek portions, and'a link'member coupling the inner ends of the jaws be? tween the cheekportions.

3, A wrench comprising a stock, an l.-.*

shaped jaw member including a longitudinal portion and a lateral portion and pivoted intermediate the ends of the longitudinal portion to the stock, another jaw member pivotedv intermediate its ends to the steak, a link member coupling the inner ends of the jaws, one of said jaw members having a portion adapted to bear against the other jaw to limit the travel of the jaws at both ends of their movements.

In testimony whereof, I affix my signature hereto.

RUSSEL G. SP'EIGHT. 

